12123005 has 8 divisors (see below), whose sum is σ = 14617824. Its totient is φ = 9651600.

The previous prime is 12122987. The next prime is 12123017. The reversal of 12123005 is 50032121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12123005 - 2⁶ = 12122941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4691 + ... + 6800.

It is an arithmetic number, because the mean of its divisors is an integer number (1827228).

Almost surely, 2^12123005 is an apocalyptic number.

It is an amenable number.

12123005 is a deficient number, since it is larger than the sum of its proper divisors (2494819).

12123005 is a wasteful number, since it uses less digits than its factorization.

12123005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12123005 is about 3481.8105922063. The cubic root of 12123005 is about 229.7224440178.

Adding to 12123005 its reverse (50032121), we get a palindrome (62155126).

The spelling of 12123005 in words is "twelve million, one hundred twenty-three thousand, five".